Generic Viagra

Richard Drew / AP

This Monday, Dec. 4, 2017 photo shows Pfizer’s Viagra, left, and the company’s generic version, sildenafil citrate, at Pfizer Inc., headquarters in New York. The drugmaker is launching its own cheaper generic version of Viagra rather than lose sales when its impotence pill gets its first generic competition.

This Monday, Dec. 4, 2017 photo shows Pfizer’s Viagra, left, and the company’s generic version, sildenafil citrate, at Pfizer Inc., headquarters in New York. The drugmaker is launching its own cheaper generic version of Viagra rather than lose sales when its impotence pill gets its first generic competition.